net/mac80211/cfg.c

   1 /*
   2  * mac80211 configuration hooks for cfg80211
   3  *
   4  * Copyright 2006, 2007 Johannes Berg <johannes@sipsolutions.net>
   5  *
   6  * This file is GPLv2 as found in COPYING.
   7  */
   8
   9 #include <linux/ieee80211.h>
  10 #include <linux/nl80211.h>
  11 #include <linux/rtnetlink.h>
  12 #include <net/net_namespace.h>
  13 #include <linux/rcupdate.h>
  14 #include <net/cfg80211.h>
  15 #include "ieee80211_i.h"
  16 #include "cfg.h"
  17 #include "ieee80211_rate.h"
  18 #include "mesh.h"
  19
  20 static enum ieee80211_if_types
  21 nl80211_type_to_mac80211_type(enum nl80211_iftype type)
  22 {
  23         switch (type) {
  24         case NL80211_IFTYPE_UNSPECIFIED:
  25                 return IEEE80211_IF_TYPE_STA;
  26         case NL80211_IFTYPE_ADHOC:
  27                 return IEEE80211_IF_TYPE_IBSS;
  28         case NL80211_IFTYPE_STATION:
  29                 return IEEE80211_IF_TYPE_STA;
  30         case NL80211_IFTYPE_MONITOR:
  31                 return IEEE80211_IF_TYPE_MNTR;
  32 #ifdef CONFIG_MAC80211_MESH
  33         case NL80211_IFTYPE_MESH_POINT:
  34                 return IEEE80211_IF_TYPE_MESH_POINT;
  35 #endif
  36         default:
  37                 return IEEE80211_IF_TYPE_INVALID;
  38         }
  39 }
  40
  41 static int ieee80211_add_iface(struct wiphy *wiphy, char *name,
  42                                enum nl80211_iftype type, u32 *flags,
  43                                struct vif_params *params)
  44 {
  45         struct ieee80211_local *local = wiphy_priv(wiphy);
  46         enum ieee80211_if_types itype;
  47         struct net_device *dev;
  48         struct ieee80211_sub_if_data *sdata;
  49         int err;
  50
  51         if (unlikely(local->reg_state != IEEE80211_DEV_REGISTERED))
  52                 return -ENODEV;
  53
  54         itype = nl80211_type_to_mac80211_type(type);
  55         if (itype == IEEE80211_IF_TYPE_INVALID)
  56                 return -EINVAL;
  57
  58         err = ieee80211_if_add(local->mdev, name, &dev, itype, params);
  59         if (err || itype != IEEE80211_IF_TYPE_MNTR || !flags)
  60                 return err;
  61
  62         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
  63         sdata->u.mntr_flags = *flags;
  64         return 0;
  65 }
  66
  67 static int ieee80211_del_iface(struct wiphy *wiphy, int ifindex)
  68 {
  69         struct ieee80211_local *local = wiphy_priv(wiphy);
  70         struct net_device *dev;
  71         char *name;
  72
  73         if (unlikely(local->reg_state != IEEE80211_DEV_REGISTERED))
  74                 return -ENODEV;
  75
  76         /* we're under RTNL */
  77         dev = __dev_get_by_index(&init_net, ifindex);
  78         if (!dev)
  79                 return 0;
  80
  81         name = dev->name;
  82
  83         return ieee80211_if_remove(local->mdev, name, -1);
  84 }
  85
  86 static int ieee80211_change_iface(struct wiphy *wiphy, int ifindex,
  87                                   enum nl80211_iftype type, u32 *flags,
  88                                   struct vif_params *params)
  89 {
  90         struct ieee80211_local *local = wiphy_priv(wiphy);
  91         struct net_device *dev;
  92         enum ieee80211_if_types itype;
  93         struct ieee80211_sub_if_data *sdata;
  94
  95         if (unlikely(local->reg_state != IEEE80211_DEV_REGISTERED))
  96                 return -ENODEV;
  97
  98         /* we're under RTNL */
  99         dev = __dev_get_by_index(&init_net, ifindex);
 100         if (!dev)
 101                 return -ENODEV;
 102
 103         if (netif_running(dev))
 104                 return -EBUSY;
 105
 106         itype = nl80211_type_to_mac80211_type(type);
 107         if (itype == IEEE80211_IF_TYPE_INVALID)
 108                 return -EINVAL;
 109
 110         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 111
 112         if (sdata->vif.type == IEEE80211_IF_TYPE_VLAN)
 113                 return -EOPNOTSUPP;
 114
 115         ieee80211_if_reinit(dev);
 116         ieee80211_if_set_type(dev, itype);
 117
 118         if (ieee80211_vif_is_mesh(&sdata->vif) && params->mesh_id_len)
 119                 ieee80211_if_sta_set_mesh_id(&sdata->u.sta,
 120                                              params->mesh_id_len,
 121                                              params->mesh_id);
 122
 123         if (sdata->vif.type != IEEE80211_IF_TYPE_MNTR || !flags)
 124                 return 0;
 125
 126         sdata->u.mntr_flags = *flags;
 127         return 0;
 128 }
 129
 130 static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev,
 131                              u8 key_idx, u8 *mac_addr,
 132                              struct key_params *params)
 133 {
 134         struct ieee80211_sub_if_data *sdata;
 135         struct sta_info *sta = NULL;
 136         enum ieee80211_key_alg alg;
 137         struct ieee80211_key *key;
 138
 139         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 140
 141         switch (params->cipher) {
 142         case WLAN_CIPHER_SUITE_WEP40:
 143         case WLAN_CIPHER_SUITE_WEP104:
 144                 alg = ALG_WEP;
 145                 break;
 146         case WLAN_CIPHER_SUITE_TKIP:
 147                 alg = ALG_TKIP;
 148                 break;
 149         case WLAN_CIPHER_SUITE_CCMP:
 150                 alg = ALG_CCMP;
 151                 break;
 152         default:
 153                 return -EINVAL;
 154         }
 155
 156         key = ieee80211_key_alloc(alg, key_idx, params->key_len, params->key);
 157         if (!key)
 158                 return -ENOMEM;
 159
 160         if (mac_addr) {
 161                 sta = sta_info_get(sdata->local, mac_addr);
 162                 if (!sta) {
 163                         ieee80211_key_free(key);
 164                         return -ENOENT;
 165                 }
 166         }
 167
 168         ieee80211_key_link(key, sdata, sta);
 169
 170         return 0;
 171 }
 172
 173 static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev,
 174                              u8 key_idx, u8 *mac_addr)
 175 {
 176         struct ieee80211_sub_if_data *sdata;
 177         struct sta_info *sta;
 178         int ret;
 179
 180         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 181
 182         if (mac_addr) {
 183                 sta = sta_info_get(sdata->local, mac_addr);
 184                 if (!sta)
 185                         return -ENOENT;
 186
 187                 ret = 0;
 188                 if (sta->key) {
 189                         ieee80211_key_free(sta->key);
 190                         WARN_ON(sta->key);
 191                 } else
 192                         ret = -ENOENT;
 193
 194                 return ret;
 195         }
 196
 197         if (!sdata->keys[key_idx])
 198                 return -ENOENT;
 199
 200         ieee80211_key_free(sdata->keys[key_idx]);
 201         WARN_ON(sdata->keys[key_idx]);
 202
 203         return 0;
 204 }
 205
 206 static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev,
 207                              u8 key_idx, u8 *mac_addr, void *cookie,
 208                              void (*callback)(void *cookie,
 209                                               struct key_params *params))
 210 {
 211         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 212         struct sta_info *sta = NULL;
 213         u8 seq[6] = {0};
 214         struct key_params params;
 215         struct ieee80211_key *key;
 216         u32 iv32;
 217         u16 iv16;
 218         int err = -ENOENT;
 219
 220         if (mac_addr) {
 221                 sta = sta_info_get(sdata->local, mac_addr);
 222                 if (!sta)
 223                         goto out;
 224
 225                 key = sta->key;
 226         } else
 227                 key = sdata->keys[key_idx];
 228
 229         if (!key)
 230                 goto out;
 231
 232         memset(&params, 0, sizeof(params));
 233
 234         switch (key->conf.alg) {
 235         case ALG_TKIP:
 236                 params.cipher = WLAN_CIPHER_SUITE_TKIP;
 237
 238                 iv32 = key->u.tkip.iv32;
 239                 iv16 = key->u.tkip.iv16;
 240
 241                 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE &&
 242                     sdata->local->ops->get_tkip_seq)
 243                         sdata->local->ops->get_tkip_seq(
 244                                 local_to_hw(sdata->local),
 245                                 key->conf.hw_key_idx,
 246                                 &iv32, &iv16);
 247
 248                 seq[0] = iv16 & 0xff;
 249                 seq[1] = (iv16 >> 8) & 0xff;
 250                 seq[2] = iv32 & 0xff;
 251                 seq[3] = (iv32 >> 8) & 0xff;
 252                 seq[4] = (iv32 >> 16) & 0xff;
 253                 seq[5] = (iv32 >> 24) & 0xff;
 254                 params.seq = seq;
 255                 params.seq_len = 6;
 256                 break;
 257         case ALG_CCMP:
 258                 params.cipher = WLAN_CIPHER_SUITE_CCMP;
 259                 seq[0] = key->u.ccmp.tx_pn[5];
 260                 seq[1] = key->u.ccmp.tx_pn[4];
 261                 seq[2] = key->u.ccmp.tx_pn[3];
 262                 seq[3] = key->u.ccmp.tx_pn[2];
 263                 seq[4] = key->u.ccmp.tx_pn[1];
 264                 seq[5] = key->u.ccmp.tx_pn[0];
 265                 params.seq = seq;
 266                 params.seq_len = 6;
 267                 break;
 268         case ALG_WEP:
 269                 if (key->conf.keylen == 5)
 270                         params.cipher = WLAN_CIPHER_SUITE_WEP40;
 271                 else
 272                         params.cipher = WLAN_CIPHER_SUITE_WEP104;
 273                 break;
 274         }
 275
 276         params.key = key->conf.key;
 277         params.key_len = key->conf.keylen;
 278
 279         callback(cookie, &params);
 280         err = 0;
 281
 282  out:
 283         return err;
 284 }
 285
 286 static int ieee80211_config_default_key(struct wiphy *wiphy,
 287                                         struct net_device *dev,
 288                                         u8 key_idx)
 289 {
 290         struct ieee80211_sub_if_data *sdata;
 291
 292         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 293         ieee80211_set_default_key(sdata, key_idx);
 294
 295         return 0;
 296 }
 297
 298 static void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo)
 299 {
 300         struct ieee80211_sub_if_data *sdata = sta->sdata;
 301
 302         sinfo->filled = STATION_INFO_INACTIVE_TIME |
 303                         STATION_INFO_RX_BYTES |
 304                         STATION_INFO_TX_BYTES;
 305
 306         sinfo->inactive_time = jiffies_to_msecs(jiffies - sta->last_rx);
 307         sinfo->rx_bytes = sta->rx_bytes;
 308         sinfo->tx_bytes = sta->tx_bytes;
 309
 310         if (ieee80211_vif_is_mesh(&sdata->vif)) {
 311 #ifdef CONFIG_MAC80211_MESH
 312                 sinfo->filled |= STATION_INFO_LLID |
 313                                  STATION_INFO_PLID |
 314                                  STATION_INFO_PLINK_STATE;
 315
 316                 sinfo->llid = le16_to_cpu(sta->llid);
 317                 sinfo->plid = le16_to_cpu(sta->plid);
 318                 sinfo->plink_state = sta->plink_state;
 319 #endif
 320         }
 321 }
 322
 323
 324 static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev,
 325                                  int idx, u8 *mac, struct station_info *sinfo)
 326 {
 327         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 328         struct sta_info *sta;
 329         int ret = -ENOENT;
 330
 331         rcu_read_lock();
 332
 333         sta = sta_info_get_by_idx(local, idx, dev);
 334         if (sta) {
 335                 ret = 0;
 336                 memcpy(mac, sta->addr, ETH_ALEN);
 337                 sta_set_sinfo(sta, sinfo);
 338         }
 339
 340         rcu_read_unlock();
 341
 342         return ret;
 343 }
 344
 345 static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev,
 346                                  u8 *mac, struct station_info *sinfo)
 347 {
 348         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 349         struct sta_info *sta;
 350         int ret = -ENOENT;
 351
 352         rcu_read_lock();
 353
 354         /* XXX: verify sta->dev == dev */
 355
 356         sta = sta_info_get(local, mac);
 357         if (sta) {
 358                 ret = 0;
 359                 sta_set_sinfo(sta, sinfo);
 360         }
 361
 362         rcu_read_unlock();
 363
 364         return ret;
 365 }
 366
 367 /*
 368  * This handles both adding a beacon and setting new beacon info
 369  */
 370 static int ieee80211_config_beacon(struct ieee80211_sub_if_data *sdata,
 371                                    struct beacon_parameters *params)
 372 {
 373         struct beacon_data *new, *old;
 374         int new_head_len, new_tail_len;
 375         int size;
 376         int err = -EINVAL;
 377
 378         old = sdata->u.ap.beacon;
 379
 380         /* head must not be zero-length */
 381         if (params->head && !params->head_len)
 382                 return -EINVAL;
 383
 384         /*
 385          * This is a kludge. beacon interval should really be part
 386          * of the beacon information.
 387          */
 388         if (params->interval) {
 389                 sdata->local->hw.conf.beacon_int = params->interval;
 390                 if (ieee80211_hw_config(sdata->local))
 391                         return -EINVAL;
 392                 /*
 393                  * We updated some parameter so if below bails out
 394                  * it's not an error.
 395                  */
 396                 err = 0;
 397         }
 398
 399         /* Need to have a beacon head if we don't have one yet */
 400         if (!params->head && !old)
 401                 return err;
 402
 403         /* sorry, no way to start beaconing without dtim period */
 404         if (!params->dtim_period && !old)
 405                 return err;
 406
 407         /* new or old head? */
 408         if (params->head)
 409                 new_head_len = params->head_len;
 410         else
 411                 new_head_len = old->head_len;
 412
 413         /* new or old tail? */
 414         if (params->tail || !old)
 415                 /* params->tail_len will be zero for !params->tail */
 416                 new_tail_len = params->tail_len;
 417         else
 418                 new_tail_len = old->tail_len;
 419
 420         size = sizeof(*new) + new_head_len + new_tail_len;
 421
 422         new = kzalloc(size, GFP_KERNEL);
 423         if (!new)
 424                 return -ENOMEM;
 425
 426         /* start filling the new info now */
 427
 428         /* new or old dtim period? */
 429         if (params->dtim_period)
 430                 new->dtim_period = params->dtim_period;
 431         else
 432                 new->dtim_period = old->dtim_period;
 433
 434         /*
 435          * pointers go into the block we allocated,
 436          * memory is | beacon_data | head | tail |
 437          */
 438         new->head = ((u8 *) new) + sizeof(*new);
 439         new->tail = new->head + new_head_len;
 440         new->head_len = new_head_len;
 441         new->tail_len = new_tail_len;
 442
 443         /* copy in head */
 444         if (params->head)
 445                 memcpy(new->head, params->head, new_head_len);
 446         else
 447                 memcpy(new->head, old->head, new_head_len);
 448
 449         /* copy in optional tail */
 450         if (params->tail)
 451                 memcpy(new->tail, params->tail, new_tail_len);
 452         else
 453                 if (old)
 454                         memcpy(new->tail, old->tail, new_tail_len);
 455
 456         rcu_assign_pointer(sdata->u.ap.beacon, new);
 457
 458         synchronize_rcu();
 459
 460         kfree(old);
 461
 462         return ieee80211_if_config_beacon(sdata->dev);
 463 }
 464
 465 static int ieee80211_add_beacon(struct wiphy *wiphy, struct net_device *dev,
 466                                 struct beacon_parameters *params)
 467 {
 468         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 469         struct beacon_data *old;
 470
 471         if (sdata->vif.type != IEEE80211_IF_TYPE_AP)
 472                 return -EINVAL;
 473
 474         old = sdata->u.ap.beacon;
 475
 476         if (old)
 477                 return -EALREADY;
 478
 479         return ieee80211_config_beacon(sdata, params);
 480 }
 481
 482 static int ieee80211_set_beacon(struct wiphy *wiphy, struct net_device *dev,
 483                                 struct beacon_parameters *params)
 484 {
 485         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 486         struct beacon_data *old;
 487
 488         if (sdata->vif.type != IEEE80211_IF_TYPE_AP)
 489                 return -EINVAL;
 490
 491         old = sdata->u.ap.beacon;
 492
 493         if (!old)
 494                 return -ENOENT;
 495
 496         return ieee80211_config_beacon(sdata, params);
 497 }
 498
 499 static int ieee80211_del_beacon(struct wiphy *wiphy, struct net_device *dev)
 500 {
 501         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 502         struct beacon_data *old;
 503
 504         if (sdata->vif.type != IEEE80211_IF_TYPE_AP)
 505                 return -EINVAL;
 506
 507         old = sdata->u.ap.beacon;
 508
 509         if (!old)
 510                 return -ENOENT;
 511
 512         rcu_assign_pointer(sdata->u.ap.beacon, NULL);
 513         synchronize_rcu();
 514         kfree(old);
 515
 516         return ieee80211_if_config_beacon(dev);
 517 }
 518
 519 /* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */
 520 struct iapp_layer2_update {
 521         u8 da[ETH_ALEN];        /* broadcast */
 522         u8 sa[ETH_ALEN];        /* STA addr */
 523         __be16 len;             /* 6 */
 524         u8 dsap;                /* 0 */
 525         u8 ssap;                /* 0 */
 526         u8 control;
 527         u8 xid_info[3];
 528 } __attribute__ ((packed));
 529
 530 static void ieee80211_send_layer2_update(struct sta_info *sta)
 531 {
 532         struct iapp_layer2_update *msg;
 533         struct sk_buff *skb;
 534
 535         /* Send Level 2 Update Frame to update forwarding tables in layer 2
 536          * bridge devices */
 537
 538         skb = dev_alloc_skb(sizeof(*msg));
 539         if (!skb)
 540                 return;
 541         msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg));
 542
 543         /* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID)
 544          * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */
 545
 546         memset(msg->da, 0xff, ETH_ALEN);
 547         memcpy(msg->sa, sta->addr, ETH_ALEN);
 548         msg->len = htons(6);
 549         msg->dsap = 0;
 550         msg->ssap = 0x01;       /* NULL LSAP, CR Bit: Response */
 551         msg->control = 0xaf;    /* XID response lsb.1111F101.
 552                                  * F=0 (no poll command; unsolicited frame) */
 553         msg->xid_info[0] = 0x81;        /* XID format identifier */
 554         msg->xid_info[1] = 1;   /* LLC types/classes: Type 1 LLC */
 555         msg->xid_info[2] = 0;   /* XID sender's receive window size (RW) */
 556
 557         skb->dev = sta->sdata->dev;
 558         skb->protocol = eth_type_trans(skb, sta->sdata->dev);
 559         memset(skb->cb, 0, sizeof(skb->cb));
 560         netif_rx(skb);
 561 }
 562
 563 static void sta_apply_parameters(struct ieee80211_local *local,
 564                                  struct sta_info *sta,
 565                                  struct station_parameters *params)
 566 {
 567         u32 rates;
 568         int i, j;
 569         struct ieee80211_supported_band *sband;
 570         struct ieee80211_sub_if_data *sdata = sta->sdata;
 571
 572         /*
 573          * FIXME: updating the flags is racy when this function is
 574          *        called from ieee80211_change_station(), this will
 575          *        be resolved in a future patch.
 576          */
 577
 578         if (params->station_flags & STATION_FLAG_CHANGED) {
 579                 sta->flags &= ~WLAN_STA_AUTHORIZED;
 580                 if (params->station_flags & STATION_FLAG_AUTHORIZED)
 581                         sta->flags |= WLAN_STA_AUTHORIZED;
 582
 583                 sta->flags &= ~WLAN_STA_SHORT_PREAMBLE;
 584                 if (params->station_flags & STATION_FLAG_SHORT_PREAMBLE)
 585                         sta->flags |= WLAN_STA_SHORT_PREAMBLE;
 586
 587                 sta->flags &= ~WLAN_STA_WME;
 588                 if (params->station_flags & STATION_FLAG_WME)
 589                         sta->flags |= WLAN_STA_WME;
 590         }
 591
 592         /*
 593          * FIXME: updating the following information is racy when this
 594          *        function is called from ieee80211_change_station().
 595          *        However, all this information should be static so
 596          *        maybe we should just reject attemps to change it.
 597          */
 598
 599         if (params->aid) {
 600                 sta->aid = params->aid;
 601                 if (sta->aid > IEEE80211_MAX_AID)
 602                         sta->aid = 0; /* XXX: should this be an error? */
 603         }
 604
 605         if (params->listen_interval >= 0)
 606                 sta->listen_interval = params->listen_interval;
 607
 608         if (params->supported_rates) {
 609                 rates = 0;
 610                 sband = local->hw.wiphy->bands[local->oper_channel->band];
 611
 612                 for (i = 0; i < params->supported_rates_len; i++) {
 613                         int rate = (params->supported_rates[i] & 0x7f) * 5;
 614                         for (j = 0; j < sband->n_bitrates; j++) {
 615                                 if (sband->bitrates[j].bitrate == rate)
 616                                         rates |= BIT(j);
 617                         }
 618                 }
 619                 sta->supp_rates[local->oper_channel->band] = rates;
 620         }
 621
 622         if (ieee80211_vif_is_mesh(&sdata->vif) && params->plink_action) {
 623                 switch (params->plink_action) {
 624                 case PLINK_ACTION_OPEN:
 625                         mesh_plink_open(sta);
 626                         break;
 627                 case PLINK_ACTION_BLOCK:
 628                         mesh_plink_block(sta);
 629                         break;
 630                 }
 631         }
 632 }
 633
 634 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
 635                                  u8 *mac, struct station_parameters *params)
 636 {
 637         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 638         struct sta_info *sta;
 639         struct ieee80211_sub_if_data *sdata;
 640         int err;
 641
 642         /* Prevent a race with changing the rate control algorithm */
 643         if (!netif_running(dev))
 644                 return -ENETDOWN;
 645
 646         if (params->vlan) {
 647                 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
 648
 649                 if (sdata->vif.type != IEEE80211_IF_TYPE_VLAN ||
 650                     sdata->vif.type != IEEE80211_IF_TYPE_AP)
 651                         return -EINVAL;
 652         } else
 653                 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 654
 655         if (compare_ether_addr(mac, dev->dev_addr) == 0)
 656                 return -EINVAL;
 657
 658         if (is_multicast_ether_addr(mac))
 659                 return -EINVAL;
 660
 661         sta = sta_info_alloc(sdata, mac, GFP_KERNEL);
 662         if (!sta)
 663                 return -ENOMEM;
 664
 665         sta->flags = WLAN_STA_AUTH | WLAN_STA_ASSOC;
 666
 667         sta_apply_parameters(local, sta, params);
 668
 669         rate_control_rate_init(sta, local);
 670
 671         rcu_read_lock();
 672
 673         err = sta_info_insert(sta);
 674         if (err) {
 675                 /* STA has been freed */
 676                 rcu_read_unlock();
 677                 return err;
 678         }
 679
 680         if (sdata->vif.type == IEEE80211_IF_TYPE_VLAN ||
 681             sdata->vif.type == IEEE80211_IF_TYPE_AP)
 682                 ieee80211_send_layer2_update(sta);
 683
 684         rcu_read_unlock();
 685
 686         return 0;
 687 }
 688
 689 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev,
 690                                  u8 *mac)
 691 {
 692         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 693         struct ieee80211_local *local = sdata->local;
 694         struct sta_info *sta;
 695
 696         if (mac) {
 697                 /* XXX: get sta belonging to dev */
 698                 sta = sta_info_get(local, mac);
 699                 if (!sta)
 700                         return -ENOENT;
 701
 702                 sta_info_unlink(&sta);
 703
 704                 if (sta) {
 705                         synchronize_rcu();
 706                         sta_info_destroy(sta);
 707                 }
 708         } else
 709                 sta_info_flush(local, sdata);
 710
 711         return 0;
 712 }
 713
 714 static int ieee80211_change_station(struct wiphy *wiphy,
 715                                     struct net_device *dev,
 716                                     u8 *mac,
 717                                     struct station_parameters *params)
 718 {
 719         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 720         struct sta_info *sta;
 721         struct ieee80211_sub_if_data *vlansdata;
 722
 723         /* XXX: get sta belonging to dev */
 724         sta = sta_info_get(local, mac);
 725         if (!sta)
 726                 return -ENOENT;
 727
 728         if (params->vlan && params->vlan != sta->sdata->dev) {
 729                 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
 730
 731                 if (vlansdata->vif.type != IEEE80211_IF_TYPE_VLAN ||
 732                     vlansdata->vif.type != IEEE80211_IF_TYPE_AP)
 733                         return -EINVAL;
 734
 735                 sta->sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
 736                 ieee80211_send_layer2_update(sta);
 737         }
 738
 739         sta_apply_parameters(local, sta, params);
 740
 741         return 0;
 742 }
 743
 744 #ifdef CONFIG_MAC80211_MESH
 745 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev,
 746                                  u8 *dst, u8 *next_hop)
 747 {
 748         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 749         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 750         struct mesh_path *mpath;
 751         struct sta_info *sta;
 752         int err;
 753
 754         if (!netif_running(dev))
 755                 return -ENETDOWN;
 756
 757         if (sdata->vif.type != IEEE80211_IF_TYPE_MESH_POINT)
 758                 return -ENOTSUPP;
 759
 760         rcu_read_lock();
 761         sta = sta_info_get(local, next_hop);
 762         if (!sta) {
 763                 rcu_read_unlock();
 764                 return -ENOENT;
 765         }
 766
 767         err = mesh_path_add(dst, dev);
 768         if (err) {
 769                 rcu_read_unlock();
 770                 return err;
 771         }
 772
 773         mpath = mesh_path_lookup(dst, dev);
 774         if (!mpath) {
 775                 rcu_read_unlock();
 776                 return -ENXIO;
 777         }
 778         mesh_path_fix_nexthop(mpath, sta);
 779
 780         rcu_read_unlock();
 781         return 0;
 782 }
 783
 784 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev,
 785                                  u8 *dst)
 786 {
 787         if (dst)
 788                 return mesh_path_del(dst, dev);
 789
 790         mesh_path_flush(dev);
 791         return 0;
 792 }
 793
 794 static int ieee80211_change_mpath(struct wiphy *wiphy,
 795                                     struct net_device *dev,
 796                                     u8 *dst, u8 *next_hop)
 797 {
 798         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 799         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 800         struct mesh_path *mpath;
 801         struct sta_info *sta;
 802
 803         if (!netif_running(dev))
 804                 return -ENETDOWN;
 805
 806         if (sdata->vif.type != IEEE80211_IF_TYPE_MESH_POINT)
 807                 return -ENOTSUPP;
 808
 809         rcu_read_lock();
 810
 811         sta = sta_info_get(local, next_hop);
 812         if (!sta) {
 813                 rcu_read_unlock();
 814                 return -ENOENT;
 815         }
 816
 817         mpath = mesh_path_lookup(dst, dev);
 818         if (!mpath) {
 819                 rcu_read_unlock();
 820                 return -ENOENT;
 821         }
 822
 823         mesh_path_fix_nexthop(mpath, sta);
 824
 825         rcu_read_unlock();
 826         return 0;
 827 }
 828
 829 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop,
 830                             struct mpath_info *pinfo)
 831 {
 832         if (mpath->next_hop)
 833                 memcpy(next_hop, mpath->next_hop->addr, ETH_ALEN);
 834         else
 835                 memset(next_hop, 0, ETH_ALEN);
 836
 837         pinfo->filled = MPATH_INFO_FRAME_QLEN |
 838                         MPATH_INFO_DSN |
 839                         MPATH_INFO_METRIC |
 840                         MPATH_INFO_EXPTIME |
 841                         MPATH_INFO_DISCOVERY_TIMEOUT |
 842                         MPATH_INFO_DISCOVERY_RETRIES |
 843                         MPATH_INFO_FLAGS;
 844
 845         pinfo->frame_qlen = mpath->frame_queue.qlen;
 846         pinfo->dsn = mpath->dsn;
 847         pinfo->metric = mpath->metric;
 848         if (time_before(jiffies, mpath->exp_time))
 849                 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies);
 850         pinfo->discovery_timeout =
 851                         jiffies_to_msecs(mpath->discovery_timeout);
 852         pinfo->discovery_retries = mpath->discovery_retries;
 853         pinfo->flags = 0;
 854         if (mpath->flags & MESH_PATH_ACTIVE)
 855                 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE;
 856         if (mpath->flags & MESH_PATH_RESOLVING)
 857                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
 858         if (mpath->flags & MESH_PATH_DSN_VALID)
 859                 pinfo->flags |= NL80211_MPATH_FLAG_DSN_VALID;
 860         if (mpath->flags & MESH_PATH_FIXED)
 861                 pinfo->flags |= NL80211_MPATH_FLAG_FIXED;
 862         if (mpath->flags & MESH_PATH_RESOLVING)
 863                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
 864
 865         pinfo->flags = mpath->flags;
 866 }
 867
 868 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev,
 869                                u8 *dst, u8 *next_hop, struct mpath_info *pinfo)
 870
 871 {
 872         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 873         struct mesh_path *mpath;
 874
 875         if (sdata->vif.type != IEEE80211_IF_TYPE_MESH_POINT)
 876                 return -ENOTSUPP;
 877
 878         rcu_read_lock();
 879         mpath = mesh_path_lookup(dst, dev);
 880         if (!mpath) {
 881                 rcu_read_unlock();
 882                 return -ENOENT;
 883         }
 884         memcpy(dst, mpath->dst, ETH_ALEN);
 885         mpath_set_pinfo(mpath, next_hop, pinfo);
 886         rcu_read_unlock();
 887         return 0;
 888 }
 889
 890 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev,
 891                                  int idx, u8 *dst, u8 *next_hop,
 892                                  struct mpath_info *pinfo)
 893 {
 894         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 895         struct mesh_path *mpath;
 896
 897         if (sdata->vif.type != IEEE80211_IF_TYPE_MESH_POINT)
 898                 return -ENOTSUPP;
 899
 900         rcu_read_lock();
 901         mpath = mesh_path_lookup_by_idx(idx, dev);
 902         if (!mpath) {
 903                 rcu_read_unlock();
 904                 return -ENOENT;
 905         }
 906         memcpy(dst, mpath->dst, ETH_ALEN);
 907         mpath_set_pinfo(mpath, next_hop, pinfo);
 908         rcu_read_unlock();
 909         return 0;
 910 }
 911 #endif
 912
 913 struct cfg80211_ops mac80211_config_ops = {
 914         .add_virtual_intf = ieee80211_add_iface,
 915         .del_virtual_intf = ieee80211_del_iface,
 916         .change_virtual_intf = ieee80211_change_iface,
 917         .add_key = ieee80211_add_key,
 918         .del_key = ieee80211_del_key,
 919         .get_key = ieee80211_get_key,
 920         .set_default_key = ieee80211_config_default_key,
 921         .add_beacon = ieee80211_add_beacon,
 922         .set_beacon = ieee80211_set_beacon,
 923         .del_beacon = ieee80211_del_beacon,
 924         .add_station = ieee80211_add_station,
 925         .del_station = ieee80211_del_station,
 926         .change_station = ieee80211_change_station,
 927         .get_station = ieee80211_get_station,
 928         .dump_station = ieee80211_dump_station,
 929 #ifdef CONFIG_MAC80211_MESH
 930         .add_mpath = ieee80211_add_mpath,
 931         .del_mpath = ieee80211_del_mpath,
 932         .change_mpath = ieee80211_change_mpath,
 933         .get_mpath = ieee80211_get_mpath,
 934         .dump_mpath = ieee80211_dump_mpath,
 935 #endif
 936 };